| //@ edition:2021 |
| |
| #![feature(rustc_attrs)] |
| #![allow(unused)] |
| |
| #[derive(Debug)] |
| struct Point { |
| x: i32, |
| y: i32, |
| } |
| #[derive(Debug)] |
| struct Line { |
| p: Point, |
| q: Point |
| } |
| #[derive(Debug)] |
| struct Plane { |
| a: Line, |
| b: Line, |
| } |
| |
| fn main() { |
| let mut p = Plane { |
| a: Line { |
| p: Point { x: 1,y: 2 }, |
| q: Point { x: 3,y: 4 }, |
| }, |
| b: Line { |
| p: Point { x: 1,y: 2 }, |
| q: Point { x: 3,y: 4 }, |
| } |
| }; |
| |
| let c = #[rustc_capture_analysis] |
| //~^ ERROR: attributes on expressions are experimental |
| //~| NOTE: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> |
| //~| NOTE: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date |
| || { |
| //~^ ERROR: First Pass analysis includes: |
| //~| ERROR: Min Capture analysis includes: |
| let x = &p.a.p.x; |
| //~^ NOTE: Capturing p[(0, 0),(0, 0),(0, 0)] -> ImmBorrow |
| p.b.q.y = 9; |
| //~^ NOTE: Capturing p[(1, 0),(1, 0),(1, 0)] -> MutBorrow |
| //~| NOTE: p[] captured as MutBorrow here |
| println!("{:?}", p); |
| //~^ NOTE: Capturing p[] -> ImmBorrow |
| //~| NOTE: Min Capture p[] -> MutBorrow |
| //~| NOTE: p[] used here |
| }; |
| } |